chore: simplify package.json import and add cjs import type test (#634)

* test: simplify `package.json` import and add cjs import type test

* wip

Author: lumirlumir

knip.json

@@ -2,7 +2,7 @@
   "$schema": "https://unpkg.com/knip@5/schema.json",
   "workspaces": {
     ".": {
-      "entry": ["tests/**/*.test.{js,ts}", "tests/fixtures/*.js"],
+      "entry": ["tests/**/*.test.{js,ts,cts}", "tests/fixtures/*.js"],
       "project": ["**"],
       "ignore": ["src/types.ts"]
     },

tests/plugin.test.js

@@ -14,19 +14,12 @@ import { fileURLToPath, pathToFileURL } from "node:url";
 import { ESLint } from "eslint";
 import { LegacyESLint } from "eslint-v9/use-at-your-own-risk";
 import plugin from "../src/index.js";
+import pkg from "../package.json" with { type: "json" };
 
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
 const rulesDir = path.resolve(__dirname, "../src/rules");
 
-//-----------------------------------------------------------------------------
-// Data
-//-----------------------------------------------------------------------------
-
-const pkg = JSON.parse(
-	fs.readFileSync(path.resolve(__dirname, "../package.json"), "utf8"),
-);
-
 //-----------------------------------------------------------------------------
 // Helpers
 //-----------------------------------------------------------------------------

tests/processor.test.js

@@ -8,22 +8,13 @@
 //-----------------------------------------------------------------------------
 
 import assert from "node:assert";
-import path from "node:path";
 import { processor } from "../src/processor.js";
-import fs from "node:fs";
-import { fileURLToPath } from "node:url";
-
-const __filename = fileURLToPath(import.meta.url);
-const __dirname = path.dirname(__filename);
+import pkg from "../package.json" with { type: "json" };
 
 //-----------------------------------------------------------------------------
 // Data
 //-----------------------------------------------------------------------------
 
-const pkg = JSON.parse(
-	fs.readFileSync(path.resolve(__dirname, "../package.json"), "utf8"),
-);
-
 const BOM = "\uFEFF";
 
 //-----------------------------------------------------------------------------

tests/types/cjs-import.test.cts

@@ -0,0 +1,10 @@
+/**
+ * @fileoverview CommonJS type import test for ESLint Markdown Language Plugin.
+ * @author 루밀LuMir(lumirlumir)
+ */
+
+//-----------------------------------------------------------------------------
+// Imports
+//-----------------------------------------------------------------------------
+
+import "@eslint/markdown";

tests/types/tsconfig.json

@@ -8,5 +8,5 @@
     "exactOptionalPropertyTypes": true
   },
   "files": [],
-  "include": ["**/*.test.ts", "../../dist"]
+  "include": ["**/*.test.ts", "**/*.test.cts", "../../dist"]
 }